.theorem
  margin 1rem 0
  padding .1rem 1.5rem
  border-radius 0.4rem
  background-color #f0f4f8
  .title
    font-weight bold

.custom-block
  &.right
    color transparentify($textColor, 0.4)
    font-size 0.9rem
    text-align right

code, kbd, .line-number
  font-family source-code-pro, Menlo, Monaco, Consolas, "Courier New"

strong
  font-weight 600